According to Evan Grant of the Dallas Morning News, Yankee and Red Sox scouts are in attendance at today's Rangers game. This builds upon the trade speculation, after we heard that a Ranger's senior scout was in attendance to watch Joba Chamberlain.
Of the players that could be available, today's game featured David Murphy, Mitch Moreland, Craig Gentry, Elvis Andrus, and Mike Olt (at third base). Geovany Soto is unlikely to play today, and for those wishing on Jurisckson Profar, he's off to the WBC.

The Rangers don't have a ton of depth in the outfield, so I don't think David Murphy or Craig Gentry will be moved. Mitch Moreland makes sense at the moment, but his defense in right field is awful, and there's no place to put him once Mark Teixeira returns. Mike Olt is still a possibility, but he only came into the game in the 6th inning.

For inquiring minds, the Red Sox, who are also scouting today's game, have similar needs to the Yankees, as they'd like to acquire some depth in the outfield, as well as a possible corner infielder now that David Ortiz is facing setbacks.

Update: 6:30 PM- Ken Rosenthal reports that the Yankees are not interested in Craig Gentry. You can take him off the list of possible players that Cashman wants to put in pinstripes. He speculates that Cruz and Murphy could be targets, but if Texas is unwilling to trade Gentry for depth reasons, I don't see why they'd trade one of their two best outfielders.

Update: 8:36 PM- According to Jon Heyman, the Rangers will look to trade Elvis Andrus, assuming they can't work out an extension. Heyman says that they'll explore the market next season, but perhaps this is what all these Rangers rumors are about. I still don't see how the Yankees will fit him on the team with Derek Jeter, but Andrus offers a clear upgrade defensively and a quality bat.